What are Invasive Species?

Non-native invasive plants, whether accidentally introduced or purposefully used in gardening, aggressively push out native species because there are no naturally occurring predators, insects or diseases to control their populations.

Many invasive species are not native to Westchester, originating from Asia, Europe, or other parts of the United States. They dominate areas where they become established. They are commonly found along roadsides, the edges of lawns and forests, in open areas, and in many other areas where native vegetation has been disturbed. 

Invasive species removal is extremely important to the biodiversity in Westchester. The following are commonly found in Irvington and should be removed.  Note each individual species has its own best management practices. We encourage hand removal of these species and stress the use of chemicals as a last resort. 

Scroll down to see additional invasive species.